2 * drivers/net/phy/phy_device.c
4 * Framework for finding and configuring PHYs.
5 * Also contains generic PHY driver
9 * Copyright (c) 2004 Freescale Semiconductor, Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation; either version 2 of the License, or (at your
14 * option) any later version.
17 #include <linux/kernel.h>
18 #include <linux/string.h>
19 #include <linux/errno.h>
20 #include <linux/unistd.h>
21 #include <linux/slab.h>
22 #include <linux/interrupt.h>
23 #include <linux/init.h>
24 #include <linux/delay.h>
25 #include <linux/netdevice.h>
26 #include <linux/etherdevice.h>
27 #include <linux/skbuff.h>
29 #include <linux/module.h>
30 #include <linux/mii.h>
31 #include <linux/ethtool.h>
32 #include <linux/phy.h>
36 #include <asm/uaccess.h>
38 MODULE_DESCRIPTION("PHY library");
39 MODULE_AUTHOR("Andy Fleming");
40 MODULE_LICENSE("GPL");
42 void phy_device_free(struct phy_device *phydev)
46 EXPORT_SYMBOL(phy_device_free);
48 static void phy_device_release(struct device *dev)
50 phy_device_free(to_phy_device(dev));
53 static struct phy_driver genphy_driver;
54 extern int mdio_bus_init(void);
55 extern void mdio_bus_exit(void);
57 static LIST_HEAD(phy_fixup_list);
58 static DEFINE_MUTEX(phy_fixup_lock);
61 * Creates a new phy_fixup and adds it to the list
62 * @bus_id: A string which matches phydev->dev.bus_id (or PHY_ANY_ID)
63 * @phy_uid: Used to match against phydev->phy_id (the UID of the PHY)
64 * It can also be PHY_ANY_UID
65 * @phy_uid_mask: Applied to phydev->phy_id and fixup->phy_uid before
67 * @run: The actual code to be run when a matching PHY is found
69 int phy_register_fixup(const char *bus_id, u32 phy_uid, u32 phy_uid_mask,
70 int (*run)(struct phy_device *))
72 struct phy_fixup *fixup;
74 fixup = kzalloc(sizeof(struct phy_fixup), GFP_KERNEL);
78 strlcpy(fixup->bus_id, bus_id, sizeof(fixup->bus_id));
79 fixup->phy_uid = phy_uid;
80 fixup->phy_uid_mask = phy_uid_mask;
83 mutex_lock(&phy_fixup_lock);
84 list_add_tail(&fixup->list, &phy_fixup_list);
85 mutex_unlock(&phy_fixup_lock);
89 EXPORT_SYMBOL(phy_register_fixup);
91 /* Registers a fixup to be run on any PHY with the UID in phy_uid */
92 int phy_register_fixup_for_uid(u32 phy_uid, u32 phy_uid_mask,
93 int (*run)(struct phy_device *))
95 return phy_register_fixup(PHY_ANY_ID, phy_uid, phy_uid_mask, run);
97 EXPORT_SYMBOL(phy_register_fixup_for_uid);
99 /* Registers a fixup to be run on the PHY with id string bus_id */
100 int phy_register_fixup_for_id(const char *bus_id,
101 int (*run)(struct phy_device *))
103 return phy_register_fixup(bus_id, PHY_ANY_UID, 0xffffffff, run);
105 EXPORT_SYMBOL(phy_register_fixup_for_id);
108 * Returns 1 if fixup matches phydev in bus_id and phy_uid.
109 * Fixups can be set to match any in one or more fields.
111 static int phy_needs_fixup(struct phy_device *phydev, struct phy_fixup *fixup)
113 if (strcmp(fixup->bus_id, dev_name(&phydev->dev)) != 0)
114 if (strcmp(fixup->bus_id, PHY_ANY_ID) != 0)
117 if ((fixup->phy_uid & fixup->phy_uid_mask) !=
118 (phydev->phy_id & fixup->phy_uid_mask))
119 if (fixup->phy_uid != PHY_ANY_UID)
125 /* Runs any matching fixups for this phydev */
126 int phy_scan_fixups(struct phy_device *phydev)
128 struct phy_fixup *fixup;
130 mutex_lock(&phy_fixup_lock);
131 list_for_each_entry(fixup, &phy_fixup_list, list) {
132 if (phy_needs_fixup(phydev, fixup)) {
135 err = fixup->run(phydev);
141 mutex_unlock(&phy_fixup_lock);
145 EXPORT_SYMBOL(phy_scan_fixups);
147 struct phy_device* phy_device_create(struct mii_bus *bus, int addr, int phy_id)
149 struct phy_device *dev;
150 /* We allocate the device, and initialize the
152 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
155 return (struct phy_device*) PTR_ERR((void*)-ENOMEM);
157 dev->dev.release = phy_device_release;
161 dev->pause = dev->asym_pause = 0;
163 dev->interface = PHY_INTERFACE_MODE_GMII;
165 dev->autoneg = AUTONEG_ENABLE;
168 dev->phy_id = phy_id;
170 dev->dev.parent = bus->parent;
171 dev->dev.bus = &mdio_bus_type;
172 dev->irq = bus->irq != NULL ? bus->irq[addr] : PHY_POLL;
173 dev_set_name(&dev->dev, PHY_ID_FMT, bus->id, addr);
175 dev->state = PHY_DOWN;
177 mutex_init(&dev->lock);
181 EXPORT_SYMBOL(phy_device_create);
184 * get_phy_id - reads the specified addr for its ID.
185 * @bus: the target MII bus
186 * @addr: PHY address on the MII bus
187 * @phy_id: where to store the ID retrieved.
189 * Description: Reads the ID registers of the PHY at @addr on the
190 * @bus, stores it in @phy_id and returns zero on success.
192 int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id)
196 /* Grab the bits from PHYIR1, and put them
197 * in the upper half */
198 phy_reg = bus->read(bus, addr, MII_PHYSID1);
203 *phy_id = (phy_reg & 0xffff) << 16;
205 /* Grab the bits from PHYIR2, and put them in the lower half */
206 phy_reg = bus->read(bus, addr, MII_PHYSID2);
211 *phy_id |= (phy_reg & 0xffff);
215 EXPORT_SYMBOL(get_phy_id);
218 * get_phy_device - reads the specified PHY device and returns its @phy_device struct
219 * @bus: the target MII bus
220 * @addr: PHY address on the MII bus
222 * Description: Reads the ID registers of the PHY at @addr on the
223 * @bus, then allocates and returns the phy_device to represent it.
225 struct phy_device * get_phy_device(struct mii_bus *bus, int addr)
227 struct phy_device *dev = NULL;
231 r = get_phy_id(bus, addr, &phy_id);
235 /* If the phy_id is mostly Fs, there is no device there */
236 if ((phy_id & 0x1fffffff) == 0x1fffffff)
239 dev = phy_device_create(bus, addr, phy_id);
243 EXPORT_SYMBOL(get_phy_device);
246 * phy_device_register - Register the phy device on the MDIO bus
247 * @phy_device: phy_device structure to be added to the MDIO bus
249 int phy_device_register(struct phy_device *phydev)
253 /* Don't register a phy if one is already registered at this
255 if (phydev->bus->phy_map[phydev->addr])
257 phydev->bus->phy_map[phydev->addr] = phydev;
259 /* Run all of the fixups for this PHY */
260 phy_scan_fixups(phydev);
262 err = device_register(&phydev->dev);
264 pr_err("phy %d failed to register\n", phydev->addr);
271 phydev->bus->phy_map[phydev->addr] = NULL;
274 EXPORT_SYMBOL(phy_device_register);
277 * phy_prepare_link - prepares the PHY layer to monitor link status
278 * @phydev: target phy_device struct
279 * @handler: callback function for link status change notifications
281 * Description: Tells the PHY infrastructure to handle the
282 * gory details on monitoring link status (whether through
283 * polling or an interrupt), and to call back to the
284 * connected device driver when the link status changes.
285 * If you want to monitor your own link state, don't call
288 void phy_prepare_link(struct phy_device *phydev,
289 void (*handler)(struct net_device *))
291 phydev->adjust_link = handler;
295 * phy_connect_direct - connect an ethernet device to a specific phy_device
296 * @dev: the network device to connect
297 * @phydev: the pointer to the phy device
298 * @handler: callback function for state change notifications
299 * @flags: PHY device's dev_flags
300 * @interface: PHY device's interface
302 int phy_connect_direct(struct net_device *dev, struct phy_device *phydev,
303 void (*handler)(struct net_device *), u32 flags,
304 phy_interface_t interface)
308 rc = phy_attach_direct(dev, phydev, flags, interface);
312 phy_prepare_link(phydev, handler);
313 phy_start_machine(phydev, NULL);
315 phy_start_interrupts(phydev);
319 EXPORT_SYMBOL(phy_connect_direct);
322 * phy_connect - connect an ethernet device to a PHY device
323 * @dev: the network device to connect
324 * @bus_id: the id string of the PHY device to connect
325 * @handler: callback function for state change notifications
326 * @flags: PHY device's dev_flags
327 * @interface: PHY device's interface
329 * Description: Convenience function for connecting ethernet
330 * devices to PHY devices. The default behavior is for
331 * the PHY infrastructure to handle everything, and only notify
332 * the connected driver when the link status changes. If you
333 * don't want, or can't use the provided functionality, you may
334 * choose to call only the subset of functions which provide
335 * the desired functionality.
337 struct phy_device * phy_connect(struct net_device *dev, const char *bus_id,
338 void (*handler)(struct net_device *), u32 flags,
339 phy_interface_t interface)
341 struct phy_device *phydev;
345 /* Search the list of PHY devices on the mdio bus for the
346 * PHY with the requested name */
347 d = bus_find_device_by_name(&mdio_bus_type, NULL, bus_id);
349 pr_err("PHY %s not found\n", bus_id);
350 return ERR_PTR(-ENODEV);
352 phydev = to_phy_device(d);
354 rc = phy_connect_direct(dev, phydev, handler, flags, interface);
360 EXPORT_SYMBOL(phy_connect);
363 * phy_disconnect - disable interrupts, stop state machine, and detach a PHY device
364 * @phydev: target phy_device struct
366 void phy_disconnect(struct phy_device *phydev)
369 phy_stop_interrupts(phydev);
371 phy_stop_machine(phydev);
373 phydev->adjust_link = NULL;
377 EXPORT_SYMBOL(phy_disconnect);
380 * phy_attach_direct - attach a network device to a given PHY device pointer
381 * @dev: network device to attach
382 * @phydev: Pointer to phy_device to attach
383 * @flags: PHY device's dev_flags
384 * @interface: PHY device's interface
386 * Description: Called by drivers to attach to a particular PHY
387 * device. The phy_device is found, and properly hooked up
388 * to the phy_driver. If no driver is attached, then the
389 * genphy_driver is used. The phy_device is given a ptr to
390 * the attaching device, and given a callback for link status
391 * change. The phy_device is returned to the attaching driver.
393 int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
394 u32 flags, phy_interface_t interface)
396 struct device *d = &phydev->dev;
398 /* Assume that if there is no driver, that it doesn't
399 * exist, and we should use the genphy driver. */
400 if (NULL == d->driver) {
402 d->driver = &genphy_driver.driver;
404 err = d->driver->probe(d);
406 err = device_bind_driver(d);
412 if (phydev->attached_dev) {
413 dev_err(&dev->dev, "PHY already attached\n");
417 phydev->attached_dev = dev;
419 phydev->dev_flags = flags;
421 phydev->interface = interface;
423 /* Do initial configuration here, now that
424 * we have certain key parameters
425 * (dev_flags and interface) */
426 if (phydev->drv->config_init) {
429 err = phy_scan_fixups(phydev);
434 err = phydev->drv->config_init(phydev);
442 EXPORT_SYMBOL(phy_attach_direct);
445 * phy_attach - attach a network device to a particular PHY device
446 * @dev: network device to attach
447 * @bus_id: Bus ID of PHY device to attach
448 * @flags: PHY device's dev_flags
449 * @interface: PHY device's interface
451 * Description: Same as phy_attach_direct() except that a PHY bus_id
452 * string is passed instead of a pointer to a struct phy_device.
454 struct phy_device *phy_attach(struct net_device *dev,
455 const char *bus_id, u32 flags, phy_interface_t interface)
457 struct bus_type *bus = &mdio_bus_type;
458 struct phy_device *phydev;
462 /* Search the list of PHY devices on the mdio bus for the
463 * PHY with the requested name */
464 d = bus_find_device_by_name(bus, NULL, bus_id);
466 pr_err("PHY %s not found\n", bus_id);
467 return ERR_PTR(-ENODEV);
469 phydev = to_phy_device(d);
471 rc = phy_attach_direct(dev, phydev, flags, interface);
477 EXPORT_SYMBOL(phy_attach);
480 * phy_detach - detach a PHY device from its network device
481 * @phydev: target phy_device struct
483 void phy_detach(struct phy_device *phydev)
485 phydev->attached_dev = NULL;
487 /* If the device had no specific driver before (i.e. - it
488 * was using the generic driver), we unbind the device
489 * from the generic driver so that there's a chance a
490 * real driver could be loaded */
491 if (phydev->dev.driver == &genphy_driver.driver)
492 device_release_driver(&phydev->dev);
494 EXPORT_SYMBOL(phy_detach);
497 /* Generic PHY support and helper functions */
500 * genphy_config_advert - sanitize and advertise auto-negotation parameters
501 * @phydev: target phy_device struct
503 * Description: Writes MII_ADVERTISE with the appropriate values,
504 * after sanitizing the values to make sure we only advertise
505 * what is supported. Returns < 0 on error, 0 if the PHY's advertisement
506 * hasn't changed, and > 0 if it has changed.
508 int genphy_config_advert(struct phy_device *phydev)
512 int err, changed = 0;
514 /* Only allow advertising what
515 * this PHY supports */
516 phydev->advertising &= phydev->supported;
517 advertise = phydev->advertising;
519 /* Setup standard advertisement */
520 oldadv = adv = phy_read(phydev, MII_ADVERTISE);
525 adv &= ~(ADVERTISE_ALL | ADVERTISE_100BASE4 | ADVERTISE_PAUSE_CAP |
526 ADVERTISE_PAUSE_ASYM);
527 if (advertise & ADVERTISED_10baseT_Half)
528 adv |= ADVERTISE_10HALF;
529 if (advertise & ADVERTISED_10baseT_Full)
530 adv |= ADVERTISE_10FULL;
531 if (advertise & ADVERTISED_100baseT_Half)
532 adv |= ADVERTISE_100HALF;
533 if (advertise & ADVERTISED_100baseT_Full)
534 adv |= ADVERTISE_100FULL;
535 if (advertise & ADVERTISED_Pause)
536 adv |= ADVERTISE_PAUSE_CAP;
537 if (advertise & ADVERTISED_Asym_Pause)
538 adv |= ADVERTISE_PAUSE_ASYM;
541 err = phy_write(phydev, MII_ADVERTISE, adv);
548 /* Configure gigabit if it's supported */
549 if (phydev->supported & (SUPPORTED_1000baseT_Half |
550 SUPPORTED_1000baseT_Full)) {
551 oldadv = adv = phy_read(phydev, MII_CTRL1000);
556 adv &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
557 if (advertise & SUPPORTED_1000baseT_Half)
558 adv |= ADVERTISE_1000HALF;
559 if (advertise & SUPPORTED_1000baseT_Full)
560 adv |= ADVERTISE_1000FULL;
563 err = phy_write(phydev, MII_CTRL1000, adv);
573 EXPORT_SYMBOL(genphy_config_advert);
576 * genphy_setup_forced - configures/forces speed/duplex from @phydev
577 * @phydev: target phy_device struct
579 * Description: Configures MII_BMCR to force speed/duplex
580 * to the values in phydev. Assumes that the values are valid.
581 * Please see phy_sanitize_settings().
583 int genphy_setup_forced(struct phy_device *phydev)
588 phydev->pause = phydev->asym_pause = 0;
590 if (SPEED_1000 == phydev->speed)
591 ctl |= BMCR_SPEED1000;
592 else if (SPEED_100 == phydev->speed)
593 ctl |= BMCR_SPEED100;
595 if (DUPLEX_FULL == phydev->duplex)
596 ctl |= BMCR_FULLDPLX;
598 err = phy_write(phydev, MII_BMCR, ctl);
605 * genphy_restart_aneg - Enable and Restart Autonegotiation
606 * @phydev: target phy_device struct
608 int genphy_restart_aneg(struct phy_device *phydev)
612 ctl = phy_read(phydev, MII_BMCR);
617 ctl |= (BMCR_ANENABLE | BMCR_ANRESTART);
619 /* Don't isolate the PHY if we're negotiating */
620 ctl &= ~(BMCR_ISOLATE);
622 ctl = phy_write(phydev, MII_BMCR, ctl);
626 EXPORT_SYMBOL(genphy_restart_aneg);
630 * genphy_config_aneg - restart auto-negotiation or write BMCR
631 * @phydev: target phy_device struct
633 * Description: If auto-negotiation is enabled, we configure the
634 * advertising, and then restart auto-negotiation. If it is not
635 * enabled, then we write the BMCR.
637 int genphy_config_aneg(struct phy_device *phydev)
641 if (AUTONEG_ENABLE != phydev->autoneg)
642 return genphy_setup_forced(phydev);
644 result = genphy_config_advert(phydev);
646 if (result < 0) /* error */
650 /* Advertisment hasn't changed, but maybe aneg was never on to
651 * begin with? Or maybe phy was isolated? */
652 int ctl = phy_read(phydev, MII_BMCR);
657 if (!(ctl & BMCR_ANENABLE) || (ctl & BMCR_ISOLATE))
658 result = 1; /* do restart aneg */
661 /* Only restart aneg if we are advertising something different
662 * than we were before. */
664 result = genphy_restart_aneg(phydev);
668 EXPORT_SYMBOL(genphy_config_aneg);
671 * genphy_update_link - update link status in @phydev
672 * @phydev: target phy_device struct
674 * Description: Update the value in phydev->link to reflect the
675 * current link value. In order to do this, we need to read
676 * the status register twice, keeping the second value.
678 int genphy_update_link(struct phy_device *phydev)
683 status = phy_read(phydev, MII_BMSR);
688 /* Read link and autonegotiation status */
689 status = phy_read(phydev, MII_BMSR);
694 if ((status & BMSR_LSTATUS) == 0)
701 EXPORT_SYMBOL(genphy_update_link);
704 * genphy_read_status - check the link status and update current link state
705 * @phydev: target phy_device struct
707 * Description: Check the link, then figure out the current state
708 * by comparing what we advertise with what the link partner
709 * advertises. Start by checking the gigabit possibilities,
710 * then move on to 10/100.
712 int genphy_read_status(struct phy_device *phydev)
719 /* Update the link, but return if there
721 err = genphy_update_link(phydev);
725 if (AUTONEG_ENABLE == phydev->autoneg) {
726 if (phydev->supported & (SUPPORTED_1000baseT_Half
727 | SUPPORTED_1000baseT_Full)) {
728 lpagb = phy_read(phydev, MII_STAT1000);
733 adv = phy_read(phydev, MII_CTRL1000);
741 lpa = phy_read(phydev, MII_LPA);
746 adv = phy_read(phydev, MII_ADVERTISE);
753 phydev->speed = SPEED_10;
754 phydev->duplex = DUPLEX_HALF;
755 phydev->pause = phydev->asym_pause = 0;
757 if (lpagb & (LPA_1000FULL | LPA_1000HALF)) {
758 phydev->speed = SPEED_1000;
760 if (lpagb & LPA_1000FULL)
761 phydev->duplex = DUPLEX_FULL;
762 } else if (lpa & (LPA_100FULL | LPA_100HALF)) {
763 phydev->speed = SPEED_100;
765 if (lpa & LPA_100FULL)
766 phydev->duplex = DUPLEX_FULL;
768 if (lpa & LPA_10FULL)
769 phydev->duplex = DUPLEX_FULL;
771 if (phydev->duplex == DUPLEX_FULL){
772 phydev->pause = lpa & LPA_PAUSE_CAP ? 1 : 0;
773 phydev->asym_pause = lpa & LPA_PAUSE_ASYM ? 1 : 0;
776 int bmcr = phy_read(phydev, MII_BMCR);
780 if (bmcr & BMCR_FULLDPLX)
781 phydev->duplex = DUPLEX_FULL;
783 phydev->duplex = DUPLEX_HALF;
785 if (bmcr & BMCR_SPEED1000)
786 phydev->speed = SPEED_1000;
787 else if (bmcr & BMCR_SPEED100)
788 phydev->speed = SPEED_100;
790 phydev->speed = SPEED_10;
792 phydev->pause = phydev->asym_pause = 0;
797 EXPORT_SYMBOL(genphy_read_status);
799 static int genphy_config_init(struct phy_device *phydev)
804 /* For now, I'll claim that the generic driver supports
805 * all possible port types */
806 features = (SUPPORTED_TP | SUPPORTED_MII
807 | SUPPORTED_AUI | SUPPORTED_FIBRE |
810 /* Do we support autonegotiation? */
811 val = phy_read(phydev, MII_BMSR);
816 if (val & BMSR_ANEGCAPABLE)
817 features |= SUPPORTED_Autoneg;
819 if (val & BMSR_100FULL)
820 features |= SUPPORTED_100baseT_Full;
821 if (val & BMSR_100HALF)
822 features |= SUPPORTED_100baseT_Half;
823 if (val & BMSR_10FULL)
824 features |= SUPPORTED_10baseT_Full;
825 if (val & BMSR_10HALF)
826 features |= SUPPORTED_10baseT_Half;
828 if (val & BMSR_ESTATEN) {
829 val = phy_read(phydev, MII_ESTATUS);
834 if (val & ESTATUS_1000_TFULL)
835 features |= SUPPORTED_1000baseT_Full;
836 if (val & ESTATUS_1000_THALF)
837 features |= SUPPORTED_1000baseT_Half;
840 phydev->supported = features;
841 phydev->advertising = features;
845 int genphy_suspend(struct phy_device *phydev)
849 mutex_lock(&phydev->lock);
851 value = phy_read(phydev, MII_BMCR);
852 phy_write(phydev, MII_BMCR, (value | BMCR_PDOWN));
854 mutex_unlock(&phydev->lock);
858 EXPORT_SYMBOL(genphy_suspend);
860 int genphy_resume(struct phy_device *phydev)
864 mutex_lock(&phydev->lock);
866 value = phy_read(phydev, MII_BMCR);
867 phy_write(phydev, MII_BMCR, (value & ~BMCR_PDOWN));
869 mutex_unlock(&phydev->lock);
873 EXPORT_SYMBOL(genphy_resume);
876 * phy_probe - probe and init a PHY device
877 * @dev: device to probe and init
879 * Description: Take care of setting up the phy_device structure,
880 * set the state to READY (the driver's init function should
881 * set it to STARTING if needed).
883 static int phy_probe(struct device *dev)
885 struct phy_device *phydev;
886 struct phy_driver *phydrv;
887 struct device_driver *drv;
890 phydev = to_phy_device(dev);
892 /* Make sure the driver is held.
893 * XXX -- Is this correct? */
894 drv = get_driver(phydev->dev.driver);
895 phydrv = to_phy_driver(drv);
896 phydev->drv = phydrv;
898 /* Disable the interrupt if the PHY doesn't support it */
899 if (!(phydrv->flags & PHY_HAS_INTERRUPT))
900 phydev->irq = PHY_POLL;
902 mutex_lock(&phydev->lock);
904 /* Start out supporting everything. Eventually,
905 * a controller will attach, and may modify one
906 * or both of these values */
907 phydev->supported = phydrv->features;
908 phydev->advertising = phydrv->features;
910 /* Set the state to READY by default */
911 phydev->state = PHY_READY;
913 if (phydev->drv->probe)
914 err = phydev->drv->probe(phydev);
916 mutex_unlock(&phydev->lock);
922 static int phy_remove(struct device *dev)
924 struct phy_device *phydev;
926 phydev = to_phy_device(dev);
928 mutex_lock(&phydev->lock);
929 phydev->state = PHY_DOWN;
930 mutex_unlock(&phydev->lock);
932 if (phydev->drv->remove)
933 phydev->drv->remove(phydev);
935 put_driver(dev->driver);
942 * phy_driver_register - register a phy_driver with the PHY layer
943 * @new_driver: new phy_driver to register
945 int phy_driver_register(struct phy_driver *new_driver)
949 new_driver->driver.name = new_driver->name;
950 new_driver->driver.bus = &mdio_bus_type;
951 new_driver->driver.probe = phy_probe;
952 new_driver->driver.remove = phy_remove;
954 retval = driver_register(&new_driver->driver);
957 printk(KERN_ERR "%s: Error %d in registering driver\n",
958 new_driver->name, retval);
963 pr_debug("%s: Registered new driver\n", new_driver->name);
967 EXPORT_SYMBOL(phy_driver_register);
969 void phy_driver_unregister(struct phy_driver *drv)
971 driver_unregister(&drv->driver);
973 EXPORT_SYMBOL(phy_driver_unregister);
975 static struct phy_driver genphy_driver = {
976 .phy_id = 0xffffffff,
977 .phy_id_mask = 0xffffffff,
978 .name = "Generic PHY",
979 .config_init = genphy_config_init,
981 .config_aneg = genphy_config_aneg,
982 .read_status = genphy_read_status,
983 .suspend = genphy_suspend,
984 .resume = genphy_resume,
985 .driver = {.owner= THIS_MODULE, },
988 static int __init phy_init(void)
992 rc = mdio_bus_init();
996 rc = phy_driver_register(&genphy_driver);
1003 static void __exit phy_exit(void)
1005 phy_driver_unregister(&genphy_driver);
1009 subsys_initcall(phy_init);
1010 module_exit(phy_exit);